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fix: allow relocating the tool cache and mounting over runner paths (#1122)

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1. Docker rejects two mounts on one target, so a `container.volumes:` or `--volume` aimed at `/opt/hostedtoolcache` failed the job with `Duplicate mount point`. Job and service volumes now displace the mount on the same path, and `name:/target:ro` no longer mounts read-write at the literal path `/target:ro`.
1. Setting `RUNNER_TOOL_CACHE` only changed what the variable said, the cache stayed where it was, so tools writing to it landed outside the mount and `${{ runner.tool_cache }}` disagreed with the variable. It now relocates the cache. Leaving it unset behaves as before.
1. Unknown `config.yaml` keys now warn instead of being dropped without a trace.

Fixes https://gitea.com/gitea/runner/issues/813

---------

Co-authored-by: bircni <bircni@icloud.com>
Reviewed-on: https://gitea.com/gitea/runner/pulls/1122
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
silverwind
2026-07-29 21:32:28 +00:00
committed by silverwind
parent e6c7ba3a15
commit 0192861155
10 changed files with 210 additions and 72 deletions
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5
act/runner/step_docker.go
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@@ -110,10 +110,7 @@ func (sd *stepDocker) newStepContainer(ctx context.Context, image string, cmd, e
envList = append(envList, fmt.Sprintf("%s=%s", k, v))
}
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TOOL_CACHE", "/opt/hostedtoolcache"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_OS", "Linux"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_ARCH", container.RunnerArch(ctx)))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TEMP", "/tmp"))
envList = append(envList, rc.runnerEnv(ctx)...)
binds, mounts := rc.GetBindsAndMounts()
networkMode := "container:" + rc.jobContainerName()